Hello from Southern CA,
We just finished our 18x23 11,500 gallon pool and spa build with plenty of ups and downs and lots more landscaping and decorating to go. Biggest down is probably the discoloration, mass splotch, scale, or whatever it may be in the Stonescapes Mini Black Pebble w/abalone shell finish in the hot tub. PB stated it happens with dark pebble which I’m fine with the natural color variance but this seems overboard and possibly due to lack of balancing regularly. The pics are from day 10 after fill. We brushed the pool as directed and when we mentioned the issue, PB said either an acid bath or drain and acid wash but nothing was set in stone and it was again mentioned that this happens with dark pebble. PB handled chemistry once a week for the first 3 weeks and we were told to check it weekly from there but I have since learned that may not exactly be correct. Aside from the huge discoloration issue in the hot tub, we are loving our pool. I’m trying not to freak out about it and have pretty much accepted the issue but would like to work to prevent further issues.
I checked chemistry levels myself for the first time today and woah, I had no idea I needed to be a chemist.
I actually found it a little fun once I got the hang of things. I used the Taylor K-2006 and input the results into Pool Math and I now know that once a week is NOT going to cut it thanks to reading Pool School and various posts as well as learning that even though the PB balanced the pool on Thursday, we jumped in with friends Sunday and found that we have no chlorine today. I’ll be working on balancing tomorrow and am grateful for the app and it’s ease of use after initial hiccups on my end with not knowing what anything meant and what types of chemicals we would be using. Once I figured that out it was an Easy process and so grateful the app gave me the info I need to help balance my pool. I also appreciate the wealth of knowledge this website, including the forums, provides.
My results:
Temp: 75*
FC: 0.0
PH: 8.0
TA: 125
CH: 350
CYA: 25
CSI: 0.59 (potential for scaling) <—— *cries*
We just finished our 18x23 11,500 gallon pool and spa build with plenty of ups and downs and lots more landscaping and decorating to go. Biggest down is probably the discoloration, mass splotch, scale, or whatever it may be in the Stonescapes Mini Black Pebble w/abalone shell finish in the hot tub. PB stated it happens with dark pebble which I’m fine with the natural color variance but this seems overboard and possibly due to lack of balancing regularly. The pics are from day 10 after fill. We brushed the pool as directed and when we mentioned the issue, PB said either an acid bath or drain and acid wash but nothing was set in stone and it was again mentioned that this happens with dark pebble. PB handled chemistry once a week for the first 3 weeks and we were told to check it weekly from there but I have since learned that may not exactly be correct. Aside from the huge discoloration issue in the hot tub, we are loving our pool. I’m trying not to freak out about it and have pretty much accepted the issue but would like to work to prevent further issues.
I checked chemistry levels myself for the first time today and woah, I had no idea I needed to be a chemist.


My results:
Temp: 75*
FC: 0.0
PH: 8.0
TA: 125
CH: 350
CYA: 25
CSI: 0.59 (potential for scaling) <—— *cries*
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